Week 2 - Deep Muscles of Posterior Spine Flashcards
what are the 4 suboccipital muscles
rectus capitis posterior minor
rectus capitis posterior major
obliquus capitis superior
obliquus capitis inferior
RECTUS CAPITIS POSTERIOR MINOR
Origin:
Insertion:
Action:
Innervation
C1
Occipital Bone
Extend the head
Suboccipital nerve
RECTUS CAPITIS POSTERIOR MAJOR
Origin:
Insertion:
Action:
Innervation
C2
Occipital bone
extend the head
suboccipital nerve
OBLIQUUS CAPITIS SUPERIOR
Origin:
Insertion:
Action:
Innervation
C1
Occipital bone
Extend head and laterally flex head
Suboccipital nerve
OBLIQUUS CAPITIS INFERIOR
Origin:
Insertion:
Action:
Innervation
C2
C1
Rotate head to the same side
Suboccipital nerve
tension in the suboccipitals MAY contribute to
tension headaches
nuchal ligament runs from…to…
external occipital protuberance to the spinous processes of all the cervical vertebrae
what does the nuchal ligament do?
stabilizes the cervical spine
extends posteriorly to serve as an ATTACHMENT SITE for several more superficial muscles such as the splenius wapitis and the trapezius
These muscles run BETWEEN THE TRANSVERSE PROCESSES of adjacent vertebrae
intertransversarri muscles
VERY DEEP*
INTERTRANSVERSARII
Origin:
Insertion:
Action:
Origin: Transverse process of an inferior vertebra
Insertion: transverse process of a vertebra immediately superior
LF of spine
the TRANSVERSOSPINALIS GROUP consists of what 3 subgroups
AKA ____
rotatores
multifidii
semispinalis
AKA PARASPINALS
A notable difference in the three subgroups of the transversospinalis group is the number of vertebrae that the muscles cross
Rotatores
multifidii
semispinalis
Rotatores cross one or two levels of vertebrae (brevis and longus)
Multifidus (multifidii) muscles cross 2, 3, or 4 levels
Semispinalis muscles traverse 5 or more levels of vertebrae.
*these deep muscles may be inconsistent in their presence in different parts of the vertebral column
ROTATORES
Origin:
Insertion:
Action:
Origin: transverse process of an inferior vertebra
Insertion: Spinous process of a superior vertebra, crossing between 1-2 levels
Action: rotation contra laterally
MULTIFIDI
Origin:
Insertion:
Action:
Origin: Transverse process of an inferior vertebra
Insertion: Spinous process of a superior vertebra crossing between 2-4 levels
Action: extension and rotation contra laterally in the region they are located
SEMISPINALIS CAPITIS
Origin:
Insertion:
Action:
Origin: TP’s/AP’s of C4-T6
Insertion: occipital bone
Action: E, LF, contralateral R
the ERECTOR SPINAE GROUP consists of these 3 subgroups:
ILIOCOSTALIS
LONGISSIMUS
SPINALIS
SPINALIS CERVICIS
Origin:
Insertion:
Action:
Origin: SP’s, nuchal ligament
Insertion: SP’s
Action: E of cervical region
SPINALIS THORACIS
Origin:
Insertion:
Action:
Origin: SP’s (T11-L2)
Insertion: SP’s (T4-T8)
Action: E of thorax
LONGISSIMUS CAPITIS
Insertion:
Action:
Insertion: mastoid process
Action: E, LF, R (ipsilateral) of HEAD AND CERVICAL SPINE
LONGISSIMUS CERVICIS
ACTION
action: E, LF, R (ipsilateral) of CERVICAL SPINE
LONGISSIMUS THORACIS
Action
action: E, LF, R (ipsilateral) of THORACIC SPINE
ILIOCOSTALIS CERVICIS
Action:
Action: E, LF, R (ipsilateral) of lower CERVICAL and upper thoracic spine
ILIOCOSTALIS THORACIS
Action:
Action: E and LF of THORACIC SPINE
ILIOCOSTALIS LUMBORUM
Action:
Action: E, LF of lower THORACIC AND LUMBAR SPINE
SPLENIUS MUSCLES are in ____ ____ group
their own
SPLENIUS CERVICIS
Action:
Action: E, LF, and R (ipsilateral) of cervical spine
SPLENIUS CAPITIS
Insertion:
Action:
Insertion: occipital bone and the mastoid process of the temporal bone
Action: E, LF, R of the head
A small portion of the _____ ______ is superficial in the _____ _____ ___ ___ ______
splenius capitis
posterior triangle of the neck.
